Yes, a very much wanted feature for me as well, swipe to go back AND forth on IOS AND OSX AND Windows. That is the way most apps work nowadays. Roon is great but the stubborn UI consistancy for different OS is going to be an archiles heel.
As far as the IOS ipad app is concerned it loads annoyingly slow everytime. Now I now that IOS is the worst multitasking OS imaginable so it is not Roon fault bur it would be very helpfull if Roon could stay active in the background. Don’t know if Apple wil allow this but As it is now every time I click on an weblink or wiki link from within Roon it opens up in Safari. Going back to Roon takes ages for Roon to start up again, very annoying.